According to the definition of clinical psychology offered by the Society of Clinical Psychology (Division 12 of the American Psychological Association), clinical psychology focuses on the aspect of human functioning.
a. social
b. intellectual
c. emotional
d. all of the above

d) All of the above

Explanation:

Emotional psychology is defined as the psychological field in which mental  and behavioral issues are treated. Study of client's emotional matters, social behavior or interaction and mental condition is done to know about their lives.

These aspects can be know through conducting test, analysis, observation etc by clinical psychologist.

All the options are correct because emotion, mind and social aspect is considered and studied in field of clinical psychology. Thus,the correct option is option(d).

that's a hard one to answer but probably independent